Graduate School of Fisheries Sciences, HokkaidoUn Japan
Main research subject has been an understanding of the effects of climate change and human impacts on marine ecosystem using seabirds as bio-indicator. I’m also working on behavior and physiology of diving seabirds, and on resource allocation between offspring and parents. With electronic devices, I have been measuring dive depth and duration, wing and foot strokes, body temperature and swim speed of various seabirds, and do comparative and theoretical studies of efficient diving. Our group is developing new hypothesis on the regulation of the frequency of strokes in divers to achieve a constant swim speed that can maximize transportation efficiency.